A frequency-bandgap waveguide controlled with metafilms composed of cubic particles

Published

November 20, 2012

Author(s)

Sung Kim, Christopher L. Holloway, Michael D. Janezic, Kendra L. Kumley, James R. Baker-Jarvis, Edward Kuester

Abstract

We present a rectangular S-band waveguide having electromagnetic bandgap properties (stopbands) controlled with sheets of metafilms composed of ceramic particles, in which we present both analytic and experimental results. Metafilms composed of TiO("d)2 ceramic cubes are fabricated for the waveguide loading, and 2,3,or 4 layers are inserted. The dispersion analysis approximates the frequency ranges of the stopbands tio be 2.49-2.66 GHz, 3.34-3,40 GHz, and 3,66-3.79 GHz, and the field patterns at a resonance around the stopband are presented and discussed. We find that more metafilm layers provide stronger attenuation, broader stopbands, and steeper roll-offs, and that the effective refractive index extracted from the reflection and transmission coefficients explains those characteristics adequately.

Citation

Journal of Applied Physics

Volume

112

Issue

10

Pub Type

Journals

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DOI Link

Keywords

waveguide, electromagnetics bandgap metafilms materials

Citation

Kim, S. , Holloway, C. , Janezic, M. , Kumley, K. , Baker-Jarvis, J. and Kuester, E. (2012), A frequency-bandgap waveguide controlled with metafilms composed of cubic particles, Journal of Applied Physics, [online], https://doi.org/10.1063/1.4767472 (Accessed December 13, 2024)